? on Fuel Regulators

[leonbentz]

I have a question on fuel regulators:

does a bad or worn regulator allow too high of pressure get to the injector? (Therefore, making the car run too rich and and get lousy fuel milage)

I have a fuel milage issue, but the flashing codes (code 12)show a normal system. Of course it should, I replaced everything else. LOL

new injector, new TPS, new ECT sensor, the whole works and not much has improved.

Thanks

[geozukigti]

Check your O2 sensor, and make sure your cat isn't plugged. Also, change the plugs, wires, cap, and rotor. Those are often the cause for poor idle, low power, and bad mileage. A bad FPR will cause your engine to foul out and stall, or not run at all. The only reason a metro FPR would fail is if the vacuum line was cracked or leaking. Never even heard of an FPR failing on a metro or swift. Give it a tune up, and make sure you're not driving it like ya stole it

[DOCTORBILL]

Originally Posted by geozukigti

A bad FPR will cause your engine to foul out and stall, or not run at all.
The only reason a metro FPR would fail is if the vacuum line was cracked
or leaking. Never even heard of an FPR failing on a metro or swift.

My Chilton Manual only shows the FPR on a 4 cyl fuel injected system
and nothing else! Where the heck would the FPR be on a 3 cyl, '93
TBI Metro engine? What does it look like? Is it connected to the ECM?

Blake (DieInterim) suggested replacing the "Diaphragm" in the FRR on
a regular basis. If I knew where it was and what it looked like, I'd have
a go at it.....

Can one obtain new diaphragms easily?

DoctorBill

[leonbentz]

It's located in front of the Injector, on top of the throttle body. They're about 24 - 30 bucks at the local parts house. No one stocks them, so it would take a day or two to get it in. Good luck. I'm puting one tomorrow myself.

[DOCTORBILL]

Originally Posted by leonbentz

It's located in front of the Injector, on top of the throttle body. They're about 24 - 30 bucks at the local parts house. No one stocks them, so it would take a day or two to get it in. Good luck. I'm puting one tomorrow myself.

Is it the thing shown with question marks?



I was going thru the Chilton Manual AGAIN looking for it when I saw
the diagram and actually looked at the labels!

Thanks for the info.

I have been digitally photographing my engine trying to identify
the various "things" so I can attend to them in an effort to get the
car running again.

I wish there was a web site that showed labeled car parts so
novices like me could learn.....

Be a good idea for this forum!

DoctorBill

[leonbentz]

Yep, you got it. 4 torxhead screws and it's off. Watch out for the spring inside. Just loosen the screws and lift it off slowly. If the rubber diaphram is not flat, replace it. Worn ones will be dished and/or dried out and cracked. The little hole in the lid is the vacuum passage and that goes straight down through the throttle body and into the intake, so really nothing can go wrong with the passage there.

[DOCTORBILL]

Originally Posted by leonbentz

Yep, you got it. 4 torxhead screws and it's off. Watch out for the spring inside. Just loosen the screws and lift it off slowly. If the rubber diaphram is not flat, replace it. Worn ones will be dished and/or dried out and cracked. The little hole in the lid is the vacuum passage and that goes straight down through the throttle body and into the intake, so really nothing can go wrong with the passage there.

I had obtained the top half of a TBI at our local Pull-n-Save ($2) and
took off the top of the FPR. The diaphragm has a metal device on
the underside with something like a floppy hangydown screw inside
it. The Big spring on the top side was very rusty. Some kind of
plastic pieces (2) of crap were under the diaphragm just sitting
there. Were obviously not part of the FPR. Must have come in with
the fuel! Interesting what garbage can get into the system!

I just ordered the Diaphragm from a local Schucks for $32 (8.1% WA
State sales Tax included) and I hope that big spring comes with it as
the one in my extra FPR was rusty - maybe mine will be also!

I haven't opened the one on my '93 yet - I'll wait until the Schucks
order comes in.

DoctorBill

BTW - I do drive my Metro "like I stole it!" That is what I
love about this little crapper - it drives like a small sports car.
I had a '56 Triumph TR3 back in college then a Datsun 1500 sports
car in graduate school. Loved driving sports cars!

Had two motorcycles...

Then got married - had kids - no more sports cars!

Motorcycles either - I wanted to stay alive to see my kids grow up...

[frets14]

DrBill, If you like sports cars then you're going to love this.... My college car was a 62 Austin Healey 3000, then I had an MG Midget and I still own a 64 TR4 and a 75 TR6. Obviously I enjoy the sports car driving experience. My first Metro was a 1989 with the 1.0L and a 5 speed. I discovered it had coil springs all around so just for fun I decided to lower it a couple of inches. Since I work maintenance in a factory, it was easy for me to make up 8 heavy duty short coil spring compressors. I placed two of them on each coil spring and closed up one gap in the spring. That lowered the car a couple of inches. What surprised me though was how it affected the way the car handled. The stiffer suspension lowered the center of gravity and made the car handle and ride just like my old MG Midget. It was fun to drive. Especially after I put in a $10 after market removable sunroof that I picked up from a local salvage yard. Just a suggestion I thought you'd appreciate. By the way, I'm a 56 year old kid and the product our factory produces is the one you proudly display on each one of your posts, the M1 Abrams tank! Sorry I strayed so far from your subject!

[DOCTORBILL]

Yes! I loved driving those sports cars - in Kaalifornyah no less...!
With several beautiful young ladies to boot! To the beach and
out into the mountains. Each one at a different era in my life....

Ah yes.....memories. Nice memories.

That Triumph TR3 was a convertible of course - but had one bad
problem. It overheated easily in traffic.

When my Dad (who bought it for me...) sold it to one of his friends
after we gave up trying to fix it, he found out from the guy he sold it
to that some ass had put the fan on backwards and it wouldn't pull
air thru the radiator efficiently!

The guy pulled the fan, reversed it and had a damn nice TR3.

It was a solid machine! Big square tube box frame. Heavy.
Sounded like a B-29 bomber when I took off from a stop sign!

Ah - the memories!

If truth be known, I wish I could drive around in an old Deisenburg
or Rolls Royce from the late 1920's.

Those were beautiful cars

Now I drive a '91 Jeep Cherokkee while my '93 Metro is down.....

But I remember those cars and those girls.....and the wind blowing
thru their blond hair! And my sunburned arms and face...

Holy Mackeral! Just writing this has brought back nice memories
of Mary and Linda. Ohhh.......and I wish I could go back knowing
what I know now.

DoctorBill

[leonbentz]

Hahahahahahah cool story Doctor Bill.